The Columbia Encyclopedia, Sixth Edition. 2001-07.
Heerlen
(hr´ln) (KEY) , city (1994 pop. 95,794), Limburg prov., SE Netherlands. It is an industrial and transportation center. Manufactures include textiles and food products. The city was a major coal-mining center from the late 19th cent. to the early 1970s, when mining operations were closed.